Hitch ball



FIG. 1 is a top front left perspective view of a hitch ball showing my new design;

FIG. 2 is a left view of FIG. 1 thereof;

FIG. 3 is a right view of FIG. 1 thereof;

FIG. 4 is a front side view of FIG. 1 thereof;

FIG. 5 is a rear side view of FIG. 1 thereof;

FIG. 6 is a top view of FIG. 1 thereof; and,

FIG. 7 is a bottom view of FIG. 1 thereof. 

CLAIM The ornamental design for a hitch ball, as shown and described. 